117742685 has 4 divisors (see below), whose sum is σ = 141291228. Its totient is φ = 94194144.

The previous prime is 117742673. The next prime is 117742687. The reversal of 117742685 is 586247711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17322244 + 100420441 = 4162^2 + 10021^2 .

It is a cyclic number.

It is not a de Polignac number, because 117742685 - 2¹⁶ = 117677149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117742687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11774264 + ... + 11774273.

It is an arithmetic number, because the mean of its divisors is an integer number (35322807).

Almost surely, 2^117742685 is an apocalyptic number.

It is an amenable number.

117742685 is a deficient number, since it is larger than the sum of its proper divisors (23548543).

117742685 is an equidigital number, since it uses as much as digits as its factorization.

117742685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23548542.

The product of its digits is 94080, while the sum is 41.

The square root of 117742685 is about 10850.9301444623. The cubic root of 117742685 is about 490.1300293539.

The spelling of 117742685 in words is "one hundred seventeen million, seven hundred forty-two thousand, six hundred eighty-five".